English prefers to use "thank you" when receiving something and "please" when asking for something, but I'm not sure if native English speakers would use "thank you" here or not. For me it sounds a bit weird, though. (I'm Finnish myself.)
I am a native english speaker and it can be either one, it’s more or less saying thank you in advance that is used when you’re already expecting them to hand you this item. It is more contextual, i suppose, but i wouldn’t count it as wrong.